Super Foods for Super Weight Loss Experts say there are two basic categories of foods that can be considered "keeping it off super foods" because they fill your tummy without piling on the calories: fruits and vegetables. And the nutrient that gives fruits and vegetables that ‘staying power?’ Fibre. So, if fruits and vegetables are the "keeping-it-off super food groups," fibre may well be the "keeping-it-off super-nutrient." Protein is another super-nutrient. It's becoming more scientifically accepted that protein may help to curb appetite. Protein also offers staying power, and can slightly boost your metabolism in the process. But it’s imperative that you choose your proteins wisely, because like all other foods, if you’re eating more than your body needs, it’ll show up on the scale as a ...